[ESS-bugs] Font lock bugs in R mode

[Martin Maechler]

>>>>> "Ari" == Ari Kornfeld <ari at perspective.com>
>>>>>     on Mon, 20 Feb 2006 23:09:40 -0800 writes:

    Ari> First the part we all agree on.  Here's some code that
    Ari> illustrates the font-lock "nesting" problem on
    Ari> warnings:

(no dispute here; as I said, I just don't have time for it yet,
 and Tony has agreed to work on it anyway)

    <................>

    Ari> Now about the T/F issue.  I don't feel strongly about
    Ari> this but aren't you splitting hairs a bit finely? If R
    Ari> is a dialect of S and some (most?) S dialects define
    Ari> T/F as constants (which, I assume, is why you don't
    Ari> object to treating T/F as constants in *S files), why
    Ari> not treat the goose like the gander?

This is an issue, were we, R-core, have tried to teach people
that R is different and why.
And *NO* ; it's wrong or at least very bad programming practice
to use T/F instead of TRUE/FALSE in R.

ESS should help people use good programming style.
If you want T/F highlighted, use *.S files (and S-plus if you like...)

Martin
    Ari>   Best regards, -ari


    Ari> Martin Maechler wrote:
    >>>>>>> "tony" == A J Rossini <blindglobe at gmail.com> on Sun,
    >>>>>>> 12 Feb 2006 12:22:59 +0100 writes:
    >>>>>>> 
    >>
    tony> I definitely agree with the bugs you raise for #2 and
    tony> on, about warning messages.
    >>  so do I; and thank you for the patches; I won't get time
    >> to look at them for the next several days, though.
    >> 
    >> 
    Ari> ....
    >> as one of the two "feeling strongly" : I'm even strongly
    >> against providing this non-feature !  It would encourage
    >> "wrong" R programming, and we definitely don't want this!
    >> I even know of someone who learned to use TRUE/FALSE just
    >> because ESS stopped to (wrongly) highlight T/F in R-mode
    >> !
    >> 
    tony> I'm assuming that you are referring to R, and not S or
    tony> S-PLUS.
    >>  Indeed; they are still highlighted in *.S files
    >> 
    >> Martin